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    <title>CCleaner - 专业系统优化工具</title>
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</head>
<body class="bg-gray-50">
    <!-- Hero Section -->
    <section class="hero-gradient text-white py-20 px-6">
        <div class="max-w-6xl mx-auto">
            <div class="text-center">
                <div class="mb-6">
                    <i class="fas fa-broom text-6xl opacity-90"></i>
                </div>
                <h1 class="text-5xl md:text-6xl font-bold mb-6">CCleaner</h1>
                <p class="text-xl md:text-2xl mb-8 opacity-90">让您的电脑焕然一新的专业系统优化工具</p>
                <div class="flex justify-center space-x-4">
                    <a href="https://www.ccleaner.com/" target="_blank" class="bg-white text-purple-700 px-8 py-3 rounded-full font-semibold hover:bg-gray-100 transition duration-300">
                        <i class="fas fa-download mr-2"></i>立即下载
                    </a>
                    <button class="border-2 border-white px-8 py-3 rounded-full font-semibold hover:bg-white hover:text-purple-700 transition duration-300">
                        <i class="fas fa-info-circle mr-2"></i>了解更多
                    </button>
                </div>
            </div>
        </div>
    </section>

    <!-- Introduction Section -->
    <section class="py-16 px-6">
        <div class="max-w-4xl mx-auto">
            <div class="bg-white rounded-2xl shadow-xl p-8 md:p-12">
                <h2 class="text-3xl font-bold mb-8 relative inline-block section-title">工具简介</h2>
                <p class="text-lg leading-relaxed text-gray-700">
                    <span class="drop-cap">C</span>Cleaner 是一款专业的系统优化和隐私保护工具，由 Piriform 公司开发。它能有效清理系统垃圾文件、修复注册表问题并保护用户隐私。作为全球数百万用户信赖的清理工具，CCleaner 以其简单易用、安全可靠的特点，成为 Windows 系统维护的必备软件。
                </p>
            </div>
        </div>
    </section>

    <!-- Core Features Section -->
    <section class="py-16 px-6 bg-gray-100">
        <div class="max-w-6xl mx-auto">
            <h2 class="text-3xl font-bold mb-12 text-center relative inline-block section-title mx-auto">核心功能</h2>
            <div class="grid md:grid-cols-2 lg:grid-cols-4 gap-6">
                <div class="bg-white rounded-xl p-6 card-hover">
                    <div class="text-4xl mb-4 feature-icon">
                        <i class="fas fa-trash-alt"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">系统清理</h3>
                    <p class="text-gray-600">清除临时文件、日志和垃圾数据，释放宝贵的磁盘空间</p>
                </div>
                <div class="bg-white rounded-xl p-6 card-hover">
                    <div class="text-4xl mb-4 feature-icon">
                        <i class="fas fa-tools"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">注册表修复</h3>
                    <p class="text-gray-600">扫描并修复无效的注册表项，提升系统稳定性</p>
                </div>
                <div class="bg-white rounded-xl p-6 card-hover">
                    <div class="text-4xl mb-4 feature-icon">
                        <i class="fas fa-shield-alt"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">隐私保护</h3>
                    <p class="text-gray-600">清除浏览历史、cookies等上网痕迹，保护个人隐私</p>
                </div>
                <div class="bg-white rounded-xl p-6 card-hover">
                    <div class="text-4xl mb-4 feature-icon">
                        <i class="fas fa-minus-circle"></i>
                    </div>
                    <h3 class="text-xl font-semibold mb-3">软件卸载</h3>
                    <p class="text-gray-600">完全移除不需要的应用程序，不留残余文件</p>
                </div>
            </div>
        </div>
    </section>

    <!-- Features Visualization -->
    <section class="py-16 px-6">
        <div class="max-w-6xl mx-auto">
            <h2 class="text-3xl font-bold mb-12 text-center">功能关系图</h2>
            <div class="bg-white rounded-2xl shadow-lg p-8">
                <div class="mermaid">
                    graph TD
                        A[CCleaner 系统优化工具] --> B[系统清理]
                        A --> C[注册表修复]
                        A --> D[隐私保护]
                        A --> E[软件卸载]
                        
                        B --> B1[临时文件清理]
                        B --> B2[日志文件清理]
                        B --> B3[回收站清空]
                        
                        C --> C1[扫描无效项]
                        C --> C2[修复错误]
                        C --> C3[备份还原]
                        
                        D --> D1[浏览器历史]
                        D --> D2[Cookies清理]
                        D --> D3[密码管理]
                        
                        E --> E1[程序卸载]
                        E --> E2[启动项管理]
                        E --> E3[浏览器插件]
                        
                        style A fill:#667eea,stroke:#764ba2,stroke-width:3px,color:#fff
                        style B fill:#e0e7ff,stroke:#667eea,stroke-width:2px
                        style C fill:#e0e7ff,stroke:#667eea,stroke-width:2px
                        style D fill:#e0e7ff,stroke:#667eea,stroke-width:2px
                        style E fill:#e0e7ff,stroke:#667eea,stroke-width:2px
                </div>
            </div>
        </div>
    </section>

    <!-- Key Features Section -->
    <section class="py-16 px-6 bg-gradient-to-br from-purple-50 to-indigo-50">
        <div class="max-w-6xl mx-auto">
            <h2 class="text-3xl font-bold mb-12 text-center relative inline-block section-title mx-auto">主要特点</h2>
            <div class="grid md:grid-cols-2 gap-8">
                <div class="flex items-start space-x-4">
                    <div class="flex-shrink-0">
                        <div class="w-12 h-12 bg-purple-100 rounded-full flex items-center justify-center">
                            <i class="fas fa-mouse-pointer text-purple-600"></i>
                        </div>
                    </div>
                    <div>
                        <h3 class="text-xl font-semibold mb-2">操作简单</h3>
                        <p class="text-gray-600">一键完成系统清理，无需复杂设置</p>
                    </div>
                </div>
                <div class="flex items-start space-x-4">
                    <div class="flex-shrink-0">
                        <div class="w-12 h-12 bg-purple-100 rounded-full flex items-center justify-center">
                            <i class="fas fa-lock text-purple-600"></i>
                        </div>
                    </div>
                    <div>
                        <h3 class="text-xl font-semibold mb-2">安全可靠</h3>
                        <p class="text-gray-600">多年市场验证的清理工具，值得信赖</p>
                    </div>
                </div>
                <div class="flex items-start space-x-4">
                    <div class="flex-shrink-0">
                        <div class="w-12 h-12 bg-purple-100 rounded-full flex items-center justify-center">
                            <i class="fas fa-language text-purple-600"></i>
                        </div>
                    </div>
                    <div>
                        <h3 class="text-xl font-semibold mb-2">多语言支持</h3>
                        <p class="text-gray-600">包括简体中文界面，使用更加便捷</p>
                    </div>
                </div>
                <div class="flex items-start space-x-4">
                    <div class="flex-shrink-0">
                        <div class="w-12 h-12 bg-purple-100 rounded-full flex items-center justify-center">
                            <i class="fas fa-feather text-purple-600"></i>
                        </div>
                    </div>
                    <div>
                        <h3 class="text-xl font-semibold mb-2">轻量高效</h3>
                        <p class="text-gray-600">运行快速不影响系统性能</p>
                    </div>
                </div>
            </div>
        </div>
    </section>

    <!-- Use Cases Section -->
    <section class="py-16 px-6">
        <div class="max-w-6xl mx-auto">
            <h2 class="text-3xl font-bold mb-12 text-center relative inline-block section-title mx-auto">适用场景</h2>
            <div class="grid md:grid-cols-2 lg:grid-cols-4 gap-6">
                <div class="text-center">
                    <div class="w-20 h-20 bg-gradient-to-br from-purple-500 to-indigo-600 rounded-full flex items-center justify-center mx-auto mb-4 text-white text-2xl">
                        <i class="fas fa-calendar-check"></i>
                    </div>
                    <h3 class="font-semibold mb-2">定期维护</h3>
                    <p class="text-gray-600 text-sm">保持电脑最佳性能状态</p>
                </div>
                <div class="text-center">
                    <div class="w-20 h-20 bg-gradient-to-br from-purple-500 to-indigo-600 rounded-full flex items-center justify-center mx-auto mb-4 text-white text-2xl">
                        <i class="fas fa-hdd"></i>
                    </div>
                    <h3 class="font-semibold mb-2">清理空间</h3>
                    <p class="text-gray-600 text-sm">释放磁盘存储空间</p>
                </div>
                <div class="text-center">
                    <div class="w-20 h-20 bg-gradient-to-br from-purple-500 to-indigo-600 rounded-full flex items-center justify-center mx-auto mb-4 text-white text-2xl">
                        <i class="fas fa-user-shield"></i>
                    </div>
                    <h3 class="font-semibold mb-2">隐私保护</h3>
                    <p class="text-gray-600 text-sm">清除个人使用痕迹</p>
                </div>
                <div class="text-center">
                    <div class="w-20 h-20 bg-gradient-to-br from-purple-500 to-indigo-600 rounded-full flex items-center justify-center mx-auto mb-4 text-white text-2xl">
                        <i class="fas fa-wrench"></i>
                    </div>
                    <h3 class="font-semibold mb-2">修复问题</h3>
                    <p class="text-gray-600 text-sm">解决系统运行故障</p>
                </div>
            </div>
        </div>
    </section>

    <!-- Version & Tips Section -->
    <section class="py-16 px-6 bg-